Add oslotest to test-requirements.txt
when executing 'tox -e debug', get error
"could not find executable 'oslo_debug_helper'"
Change-Id: Ic89fcbdc8e97c4da7587ce31fcba12b3f14c474f
Closes-Bug: #1676438
diff --git a/test-requirements.txt b/test-requirements.txt
index 2bf9f2e..74109e4 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -7,6 +7,7 @@
python-subunit>=0.0.18 # Apache-2.0/BSD
sphinx>=1.2.1,!=1.3b1,<1.4 # BSD
oslosphinx>=4.7.0 # Apache-2.0
+oslotest>=1.10.0 # Apache-2.0
testrepository>=0.0.18 # Apache-2.0/BSD
testscenarios>=0.4 # Apache-2.0/BSD
testtools>=1.4.0 # MIT